Colder than normal temperatures have made it difficult to collect maple sap. Once a maple tree is tapped, there’s usually about a six-week window of time where the hole is viable. Below-freezing nights followed by warm days are necessary to start the sap flowing, a period that usually begins in late February or early March.

“This and making honey, or the bees, those are the two projects in agriculture I feel I can’t manipulate in any way,” said Lynda Simkins. “So it is what it is, and I get what I get.”

Some years, Simkins can get hundreds of gallons of maple syrup. So far this year, they’ve only boiled out 127 gallons. She says the key to keeping Natick’s non-profit education center viable is to diversify.

“We roll with the punches. There’s always other things to do,” said Simkins. “We’re birthing animals and our greenhouses are full. It’s not like this is our only enterprise.”

In the Granite State, more than 100 members of the New Hampshire Maple Producers Association are participating in events Saturday and Sunday.

They’ll explain how their operations work and offer free samples of syrup, along with other treats ranging from maple-glazed doughnuts to coffee brewed with sap. Some locations let children help collect sap, and others have pancake breakfasts, petting farms and horse-drawn hayrides.

Last year, New Hampshire produced 124,000 gallons of syrup.

WBZ-TV’s Bree Sison contributed to this report. You can follow her on Twitter @BreeSison.